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OC Sportsplex Pool HVAC Unit Replacement <br />PDC Project 23022 Air Duct Accessories 23 33 00 - 4 <br />2.Nailor Industries Inc​​ <br />3.NCA,a brand of Metal Industries Inc​​ <br />4.Ruskin Company​​: <br />5.United Enertech​​ <br />6.Greenheck <br />7.Pottorff <br />8.Johnson Controls <br />9.Air Balance,Inc. <br />10.Or Approved Equal <br />B.Fabricate in accordance with SMACNA (DCS)and as indicated. <br />C.Round Control Damper -1 in w.g.and below: <br />1.Velocity:Up to 2,000 fpm <br />2.Temperature:180°F <br />3.Construction: <br />a.Frame Material -Galvanized Steel <br />b.Frame Thickness:20 gauge <br />c.Blade Material:Galvanized Steel <br />d.Axle Bearings:Bronze​​ <br />e.Axle Material:Plated Steel <br />f.Operaror:3/8 inch sq.locking manual quandrant. <br />1)On insulated ducts,provide 2 inch standoff bracket <br />g.Manufacturers: <br />1)Greenheck MBDR-50 <br />2)Ruskin <br />3)Nailor <br />D.Round Control Damper -4 in w.g.and below: <br />1.Velocity:Up to 3,000 fpm <br />2.Temperature:180°F <br />3.Leakage:4 cfm/ft2 @ 1 in.wg <br />4.Construction: <br />a.Frame Material -Galvanized Steel <br />b.Frame Thickness:20 gauge <br />c.Blade Material:Galvanized Steel <br />d.Blade seal:Silicone <br />e.Axle Bearings:Bronze​​ <br />f.Axle Material:Plated Steel <br />g.Operaror:3/8 inch sq.locking manual quandrant. <br />1)On insulated ducts,provide 2 inch standoff bracket <br />5.Manufacturers: <br />a.Greenheck VCDR-53 <br />b.Ruskin <br />c.Nailor <br />E.Rectangular Single Blade Dampers:1 in w.g.and below,up to 10 x 30 inch duct <br />1.Velocity:Up to 2,000 fpm <br />2.Temperature:180°F <br />3.Construction: <br />a.Frame Material -​Galvanized Steel​ <br />b.Frame Thickness:20 gauge <br />c.Blade Material:​Galvanized Steel​ <br />d.Axle Bearings:Synthetic sleeve type <br />e.Axle Material:​Plated Steel​ <br />f.Operaror:3/8 inch sq.locking manual quandrant,2-1/2 inch long extension <br />Docusign Envelope ID: D4F3B98E-0756-4A0C-A3AD-05AA32D39F1C